Solve.-z = -21
A. z = -21
B. z = 
C. z = - 
D. z = 21
Answer: D
Mathematics
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Graph the parabola and its vertex, focus, and directrix.y2 = -8x
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
A. ln
+ C
B. 
ln
+ C
C. 
ln
+ C
D. -3 ln
+ C
Mathematics
Provide an appropriate response.What does the graph of the equation 
look like?
A. The xz-plane B. The yz-plane C. The y-axis D. The x-axis
Mathematics
Find R1 if RT = 27 Kê and R2 = 5.1 Kê.
a. 21.9 Kê
b. 32.1 Kê
c. 78 Kê
d. 116 Kê
e. 121.9 Kê
Mathematics